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  • Re: New big boy op amp

    From bitrex@21:1/5 to bitrex on Thu Sep 21 01:06:57 2023
    On 9/21/2023 12:58 AM, bitrex wrote:
    Not as high a max supply voltage as the TCA0372, but that's a big boy
    slew rate and output current for the price:

    <https://www.mouser.com/ProductDetail/Richtek/RT9147ZQW?qs=amGC7iS6iy%252B8qrugDBrQag%3D%3D>

    Hmm, the data sheet says 2013, have they just been hiding at Digi Key
    all this time?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From bitrex@21:1/5 to All on Thu Sep 21 00:58:57 2023
    Not as high a max supply voltage as the TCA0372, but that's a big boy
    slew rate and output current for the price:

    <https://www.mouser.com/ProductDetail/Richtek/RT9147ZQW?qs=amGC7iS6iy%252B8qrugDBrQag%3D%3D>

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jan Panteltje@21:1/5 to user@example.net on Thu Sep 21 05:33:49 2023
    On a sunny day (Thu, 21 Sep 2023 01:06:57 -0400) it happened bitrex <user@example.net> wrote in <RbQOM.71133$Hih7.1804@fx11.iad>:

    On 9/21/2023 12:58 AM, bitrex wrote:
    Not as high a max supply voltage as the TCA0372, but that's a big boy
    slew rate and output current for the price:

    <https://www.mouser.com/ProductDetail/Richtek/RT9147ZQW?qs=amGC7iS6iy%252B8qrugDBrQag%3D%3D>

    Hmm, the data sheet says 2013, have they just been hiding at Digi Key
    all this time?

    Thin film TFT-LCD driver?????

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From John Larkin@21:1/5 to All on Thu Sep 21 07:39:30 2023
    On Thu, 21 Sep 2023 05:33:49 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    On a sunny day (Thu, 21 Sep 2023 01:06:57 -0400) it happened bitrex ><user@example.net> wrote in <RbQOM.71133$Hih7.1804@fx11.iad>:

    On 9/21/2023 12:58 AM, bitrex wrote:
    Not as high a max supply voltage as the TCA0372, but that's a big boy
    slew rate and output current for the price:

    <https://www.mouser.com/ProductDetail/Richtek/RT9147ZQW?qs=amGC7iS6iy%252B8qrugDBrQag%3D%3D>

    Hmm, the data sheet says 2013, have they just been hiding at Digi Key
    all this time?

    Thin film TFT-LCD driver?????

    If it needs an amp,the display must be very big.

    I hope the thermal limit actually works. It doesn't on TCA0372.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Phil Hobbs@21:1/5 to bitrex on Thu Sep 21 20:55:58 2023
    bitrex <user@example.net> wrote:
    Not as high a max supply voltage as the TCA0372, but that's a big boy
    slew rate and output current for the price:

    <https://www.mouser.com/ProductDetail/Richtek/RT9147ZQW?qs=amGC7iS6iy%252B8qrugDBrQag%3D%3D>


    Potentially nice part. It’s about 12 MHz GBW, vs 1.4ish for the TCA0372 or the old Fairchild L272, or a pitiful 350 kHz for the ST version.

    It has a power pad, and costs 67 cents in hundreds. (The others have gone
    way up in price.)

    LCSC doesn’t have any, which is a bit inconvenient.

    Cheers

    Phil Hobbs
    --
    Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Phil Hobbs@21:1/5 to Phil Hobbs on Thu Sep 21 21:08:57 2023
    Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:
    bitrex <user@example.net> wrote:
    Not as high a max supply voltage as the TCA0372, but that's a big boy
    slew rate and output current for the price:

    <https://www.mouser.com/ProductDetail/Richtek/RT9147ZQW?qs=amGC7iS6iy%252B8qrugDBrQag%3D%3D>


    Potentially nice part. It’s about 12 MHz GBW, vs 1.4ish for the TCA0372 or the old Fairchild L272, or a pitiful 350 kHz for the ST version.

    It has a power pad, and costs 67 cents in hundreds. (The others have gone
    way up in price.)

    LCSC doesn’t have any, which is a bit inconvenient.


    It’s only marginally stable at unity gain—like 10 dB peaking, and the datasheet isn’t exactly PMI quality.

    Cheers

    Phil Hobbs



    --
    Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)